Efficient is developing the world’s most energy-efficient general-purpose computer processor. Efficient’s patented technology uses 100x less energy than state of the art commercially available ultra-low-power processors and is programmable using standard high-level programming languages and AI/ML frameworks. This level of efficiency makes perpetual, pervasive intelligence possible: run AI/ML continuously on a AA battery for 5-10 years. Our platform’s unprecedented level of efficiency enables IoT devices to intelligently capture and curate first-party data to drive the next major computing revolution
We are seeking Software Optimization Engineers to join our growing team. Efficient’s Optimization Engineers optimize and benchmark applications, libraries, and kernels for the world’s most energy-efficient programmable processor (the “Fabric”). In this role, you will take ownership of complex, performance-critical, kernel code while working closely with Efficient’s compiler and embedded teams contributing feedback on compiler performance and kernel benchmarks on 3rd-party devices. In other words, you will push the performance limit of compute on our platform.
This position is a unique opportunity to work on cutting-edge hardware/software co-design, while making an immediate impact in building the next generation of optimized libraries and applications used by our customers.
Required Qualifications & Experience- Hands-on software development experience working closely with hardware, including exposure to at least one RISC, DSP or GPU platform.
- A passion for analyzing and maximizing software performance on an unique dataflow architecture.
- A collaborative spirit, with the ability to work with and influence multiple engineering teams.
- Demonstrated ability to write, debug, and maintain low-level systems-level code written in C/C++.
- Actively uses AI tools to generate, optimize, and debug code.
- Excellent written, verbal, analytical and technical communication skills with the ability to clearly document complex systems.
- Minimum Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field.
- Some experience with CUDA, HIP and/or other parallel programming models.
- Some exposure to low-level programming interfaces, e.g. PTX, LLVM IR and/or MLIR.
- Some domain expertise in one or more of the following areas: Linear Algebra, ML, Image Processing, Video Processing, Signal Processing, Audio Processing, SDR, realtime programming, or Robotics.
- Some background in performance profiling, benchmark design, or comparative hardware analysis.
We offer a competitive salary for this role, generally ranging from $130,000 to $200,000, along with meaningful equity and comprehensive benefits. The final compensation package will be based on your experience and location, with some flexibility to ensure we align with the right candidate.
Why Join Efficient?
Efficient offers a competitive compensation and benefits package, including 401K match, company-paid benefits, equity program, paid parental leave, and flexibility. We are committed to personal and professional development and strive to grow together as people and as a company.
Skills Required
- 8+ years of work experience
- 3+ years of C/C++ experience
- Deep knowledge of at least one embedded platform
- Experience developing and deploying applications under resource constraints
- Experience using non-standard build environments and compiler toolchains for embedded systems
- Experience using industry standard development and debugging tools for embedded development
- Strong attention to detail and problem solving skills
What We Do
Efficient is building the world’s most energy-efficient general-purpose processor by combining ultra-efficient hardware with an intuitive, developer-friendly compiler and software stack that unlocks 10–100× efficiency gains across every part of an application, including AI. Efficient was founded in 2022 to commercialize a breakthrough in efficient computation developed over nearly a decade by a team of world-leading computer architects. Efficient's world-class team has produced two silicon implementations of the Fabric architecture: the Electron E0, a prototype system-on-chip, and the Electron E1, the first silicon product. With Efficient's cutting-edge effcc Compiler and software stack, the Electron E1 processor has been delivered to customers as of mid-2025, ramping to large-scale volume and distribution in 2026. Efficient already has customer traction in areas such as physical AI for infrastructure and automation, space and defense, automotive, and consumer products. Efficient's technology scales from tiny “beyond the edge” devices to large-scale robotics, autonomy, edge cloud, and datacenter applications—enabling widespread adoption across multiple industries and positioning Efficient as the solution to the energy problem across all of computing.
